【摘要】：城市交通流量不停增長,造成城市道路日益擁堵,限制城市發(fā)展,還會造成大量汽車尾氣的排放和環(huán)境污染。雙層橋梁的出現(xiàn)在部分緩解了土地資源的稀缺,降低了土地使用成本,雙層橋以及空間立體交通網(wǎng)的建設(shè)可以一定程度上解決城市交通的擁堵問題,但是雙層橋梁以及雙層橋抗震的研究卻滯后于實際建設(shè)。 本文首先介紹了雙層橋的發(fā)展概況以及目前的研究現(xiàn)狀,介紹了橋梁在遭受地震作用時的地震災(zāi)害,以及當(dāng)前采用的橋梁抗震分析理論。在此基礎(chǔ)之上,做了以下工作： (1)利用Midas/Civil有限元軟件建立了一座下層自錨式懸索橋上層系桿拱橋雙層橋的空間模型,分析當(dāng)雙層橋分別采用盆式橡膠支座和鉛芯橡膠支座時的動力特性的對比。 (2)分析當(dāng)雙層橋的支座采用盆式橡膠支座時,在E2地震作用下,雙層橋的上部拱橋與下部懸索橋的內(nèi)力以及位移的地震反應(yīng)。 (3)介紹地震波選取的原則以及地震波選取的方法,將金渤灣雙層橋的盆式橡膠支座改為鉛芯橡膠支座進行了時程分析,分別研究水平縱向地震作用下和橫向地震作用下結(jié)構(gòu)的內(nèi)力以及位移的地震反應(yīng)。 (4)考慮不同剛度效應(yīng)的模型,有Kelvin模型、Maxwell模型、Wiechert模型等,介紹粘滯阻尼器的構(gòu)造及原理,研究不同粘滯阻尼器參數(shù)對于結(jié)構(gòu)響應(yīng)的影響,并依據(jù)選取阻尼器參數(shù)的主要原則選則阻尼器參數(shù)。
[Abstract]:Urban traffic flow is increasing, resulting in increasing congestion of urban roads, restricting urban development, and also causing a large number of vehicle exhaust emissions and environmental pollution. The emergence of double-deck bridges partly alleviates the scarcity of land resources and reduces the cost of land use. The construction of double-deck bridges and spatial three-dimensional traffic networks can solve the problem of urban traffic congestion to a certain extent. But the study of double-deck bridges and double-deck bridges lags behind the actual construction. This paper first introduces the development of double-deck bridge and the present research situation, and introduces the earthquake disaster of the bridge when it is affected by earthquake, as well as the seismic analysis theory of bridge used at present. On this basis, the following work has been done: (1) using Midas/Civil finite element software, a spatial model of the upper tied-arch double-deck bridge of a self-anchored suspension bridge is established. The dynamic characteristics of the double-deck bridge are compared when the basin rubber bearing and the lead rubber bearing are used respectively. (2) when the double deck bridge supports adopt the basin rubber bearing, under the action of E2 earthquake, The internal force and seismic response of the upper arch bridge and the lower suspension bridge of double-deck bridge are introduced. (3) the principle of seismic wave selection and the method of seismic wave selection are introduced. The time history analysis of changing the basin rubber bearing to lead rubber bearing of Jinbo Bay double deck bridge is carried out. The internal force and displacement response of the structure under horizontal longitudinal earthquake and lateral earthquake are studied respectively. (4) considering different stiffness effects, there are Kelvin model, Maxwell model, Wiechert model and so on. This paper introduces the structure and principle of viscous damper, studies the influence of different parameters of viscous damper on structural response, and selects the parameters of damper according to the main principle of selecting damper parameters.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U442.55

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